LT1997-2

RECOMMENDED FOR NEW DESIGNS

Precision, Wide Voltage Range, Gain Selectable Funnel Amplifier

Data Sheet (Rev. 0) Product Selection Table
Part Models
8
1ku List Price
Starting From $3.77
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Part Details

  • Precision Attenuation: Gain = 0.1, 0.2, 0.25
  • ±255V Common Mode Voltage Range
  • 105dB Minimum CMRR (Gain = 0.1)
  • 0.006% (60ppm) Maximum Gain Error
  • 1ppm/°C Maximum Gain Error Drift
  • 2ppm Maximum Gain Nonlinearity
  • Wide Supply Voltage Range: 3.3V to 50V
  • Rail-to-Rail Output
  • 350μA Supply Current
  • 80μV Maximum Op Amp Offset Voltage
  • 1MHz –3dB Bandwidth (Gain = 0.1)
  • Low Power Shutdown: 20μA
  • Space-Saving MSOP and DFN Packages
LT1997-2
Precision, Wide Voltage Range, Gain Selectable Funnel Amplifier
LT1997-2 Application Circuit LT1997-2 Performance Graph LT1997-2 Pin Configuration LT1997-2 Pin Configuration
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Documentation

Data Sheet 1

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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LT1997-1
  • LT1997-2
  • LT1997-3

LT1997-2 Online Design Tool - BETA

Online Design Tool – BETA helps configure difference amplifier gain and topology with consideration for supply and output common mode limitations, analyzes noise and input impedance, and generates a downloadable LTSpice file for further simulation.

Open Tool
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
DC2551A-B

LT1997 – Configurable Precision Amplifier

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Product Details

Demonstration Circuit 2551A is a Configurable Precision Amplifier featuring the LT1997.

The DC2551A-B supports the LT1997-2 version.

This demo board provides a rapid evaluation tool with jumpers providing the typical interconnection options that facilitate setting the pin-strapped internal gain configuration. The LT1997 is unusual in that it may be powered from a low voltage (down to 3.3V) while it accepts sign particularly high supply voltages, up to 50V. Connection points are provided to wire the amplifier in other configurations besides those possible with the jumpers alone.
DC2551A-B
LT1997 – Configurable Precision Amplifier
DC2551A

Reference Designs

Figure 1. CN0548 Block Diagram
Figure 1. CN0548 Block Diagram
CN0548 Evaluation Board - Angle View
CN0548 Evaluation Board - Top View
CN0548 Evaluation Board - Bottom View
CN0548 Circuits from the lab

Isolated High Voltage, High Current, Measurement Module

View Detailed Reference Design

Features and Benefits

  • Wide Current (+/-10 A) and Voltage (80 V) Input Range
  • Configurable gain/attenuation settings
  • Galvanically Isolated
  • Arduino form factor compatible

Part Used

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2022-05-13 01:02
    CN0548: Isolated High Voltage, High Current, Measurement Module
CN0548
Isolated High Voltage, High Current, Measurement Module
Figure 1. CN0548 Block Diagram
CN0548 Evaluation Board - Angle View
CN0548 Evaluation Board - Top View
CN0548 Evaluation Board - Bottom View

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